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WEEKDAY
Returns the day of the week corresponding to a date. The day is given as an integer, ranging from 1 (Sunday) to 7 (Saturday), by default.
Syntax
WEEKDAY(serial_number,return_type)
Serial_number is a sequential number that represents the date of the day you are trying to find. Dates should be entered by using the DATE function, or as results of other formulas or functions. For example, use DATE(2008,5,23) for the 23rd day of May, 2008. Problems can occur if dates are entered as text.
Return_type is a number that determines the type of return value.
| Return_type | Number returned |
|---|---|
| 1 or omitted | Numbers 1 (Sunday) through 7 (Saturday). |
| 2 | Numbers 1 (Monday) through 7 (Sunday). |
| 3 | Numbers 0 (Monday) through 6 (Sunday). |
Dates are stored as sequential serial numbers so they can be used in calculations. By default, December 31, 1899 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900.
Example
The example may be easier to understand if you copy it to a blank spreadsheet.
How?
- Create a blank spreadsheet.
- Select the example in the Help topic.
Selecting an example from Help
- Press CTRL+C.
- In the spreadsheet, select cell A1, and press CTRL+V.
- To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.
| Data | |
|---|---|
| 2/14/2008 | |
| Formula | Description (Result) |
| =WEEKDAY(A2) | Day of the week, with numbers 1 (Sunday) through 7 (Saturday) (5) |
| =WEEKDAY(A2,2) | Day of the week, with numbers 1 (Monday) through 7 (Sunday) (4) |
| =WEEKDAY(A2,3) | Day of the week, with numbers 0 (Monday) through 6 (Sunday) (3) |
Note 2/14/2008 is a Thursday.